Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Andrew Richard Williams, MD

Individual provider Internal Medicine Physician · NPI 1245641869

Dr. Andrew Richard Williams, MD is an Internal Medicine in Pasadena, California. Qualified in 2013, 13 years ago. Practices with Healthcare Partners Affiliates Medical Group, a 790-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
13
Licensed in
CA
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 W California Blvd
Pasadena, CA 91105-3010
Phone: (626) 397-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A135707 (CA)

Record details

NPI number1245641869
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 16, 2014
Last updated in NPPESJanuary 15, 2026
Certification dateJanuary 15, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Healthcare Partners Affiliates Medical Group — 790 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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